3.3 Wiring output pin
■
When the BRNS series supplies the pulse current for the pulse load, please install a
capacitor Co bVOUT and GND pins.
Fig. 3.3.1
Wiring external
output capacitor
Table 3.3.1
Recommended
Co and MaxCo
■
The output ripple voltage may grow big by resonance with Co and ESL of the wiring,
if resonance frequency and switching frequency are close.
■
Ripple and Ripple Noise are measured, as shown in the Fig.3.3.2. Cin is shown in
Table 3.2.2. Co1 and Co2 is shown in Table 3.3.2.
Fig. 3.3.2
Measuring method of
Ripple and Ripple Noise
Table 3.3.2
Co1 and Co2
which is used in
measuring
BRNS 3-4
BRNS12
47μFx1+100μFx1
1,000μF
3
BRNS20
100μFx2
1,000μF
No.
Recommended Co
Max Co
Model
1
BRNS6
47μFx1+100μFx1
1,000μF
2
Applications manual
For BRNS series
